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DTC codes / P0Bxx · Hybrid propulsion / P0B1F

P0B1FHybrid/EV Battery Pack Voltage Sense D Circuit Range/Performance

P0B1F means the hybrid or electric vehicle battery pack voltage sense circuit D is reporting a voltage reading outside the range the computer expects for the current operating conditions. The battery energy control module compares the sensed voltage from that specific circuit against other voltage sense channels and flags a range or performance fault when the signal is implausible, erratic, or stuck.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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